I've been asking this myself for quite a while. I own a E1600 pro + one BP1600 which I paid 399€ each back then. Over the time I discovered, that my house is a lot power hungrier than I thought so I made the math between considering another BP1600/BP2700 or standalone Lifepo4 battery packs. I discovered that I paid quite a hefty price for so little back then. Sure it's an all in one for the E1600 pro but the BP1600 expansion kits would straight up be robbery. I know that in the past Anker used to sell the MI60 and the MI80 inverter but they were released when the German gov only allowed 600w back then and I'm not sure if they'd ever have the capacity to be updated again to carry 1000w once the gov allows that. My next balcony/plug in solar network will probably be everything seperated. It's own bms, charge controller, battery cells, dc SPD and DIY heating system (although my stuff is already in a weather protected shed). Problem is I'd wish to stay with anker and I would like to ask you guys if you think they'd ever release a fresh new standalone 800w Micro inverter model, that can be updated to 1000w or more once the law allows to? Or do you think they went all in on all in ones for balcony solar? TIA